Opponens Digiti Minimi 

origin: hamulus of the hamate bone and flexor retinaculum;
insertion: entire length of ulnar border of 5th metacarpal;
action: flexes and slightly rotates the 5th metacarpal; helps to cup the palm of the hand;
synergists:   flexor digiti minimi brevis, abductor digiti minimi;
nerve supply: deep palmer branch of ulnar nerve, C7, C8, T1

- Discussion:
    - opponens digiti minimi is deep to  flexor brevis  & inserts into the shaft of the 5th metacarpal;
    - this muscle aids in stabilization of the ulnar grip and participates in the action of cupping of the palm

Original Text by Clifford R. Wheeless, III, MD.

Last updated by Data Trace Staff on Tuesday, April 10, 2012 3:48 pm